You are either completely unknowledgable about the situation there or arguing in bad faith. But giving you the benefit of the doubt. There is more than enough aid waiting since months just outside the borders. Israel took over the Rafah crossing to Egypt, murdering two Egyptian soldiers in the process. There also enough aid is waiting.
By stopping to arm Israel the US might not provide food literally tomorrow, but within short time. That pier took over two months to build. More than enough time for the US to pressure Israel into behaving.
Again Israel could let in aid today if they wanted to. They could stop bombing hospitals, ambulances, aid workers, refugee shelters right now if they wanted to. The US could make them want that. And if simply cutting weapons wouldnt be enough the US could declare a no fly zone and break Israels chokeholds on the border crossings by force if necessary. The US could threaten and employ a sanctions regime that would threaten to vaporize the Israeli economy, making any government resign within days.
But the US doesnt do that. The US doesnt want that. The US wants to cover for this genocide and just pretend doing something about it, which is why they build an expensive pier for months that doesnt deliver aid and then breaks apart, while watching the single attempted aid delivery to be denied by the Israeli genocidal forces.